Haas Tool Offset Measure

[Ozworks]

I agree with you, in school it should be thought how to pick up without any of the setters. That's absolutely so basic to teach that setters should not even be part of beginning classes.
OTOH, since it is a Haas, what exactly are you trying to accomplish with your macro?
A Haas, out of the box, is one of the simplest control to set tools up on and I don't see the purpose of any additional macro.
Unless I am missing something...

I do not like the method Haas uses for it's offsets. They recommend setting tools off the top of your workpiece. Doing this results in a negative value, the distance from Z home to the top of the work, being stored as the TLO. Also when you setup on the next part you are going to machine the tool lengths will be wrong. It makes more sense to me to have your tool length be the distance the tool extends from the spindle face. You can do a quick check with a steel rule to verify it's close. I use fixture offsets to tell the machine where the workpiece is located.

 

[706jim]

Setting offsets as a beginner using a toolsetter is kind of like measuring sample parts with a digital caliper rather than learning to read a vernier caliper or standard micrometer. Once you learn those basic principles you can always go to the electronic measurers or toolsetter. At my school, we invested in two $1200 electronic height gauges. I don't trust either of them either to missing digits on the display or erratic height values.
And I agree that setting offsets from the spindle gauge line whether manually or using a toolsetter is the best way to go.

 

[SeymourDumore]

I do not like the method Haas uses for it's offsets. They recommend setting tools off the top of your workpiece. \

Yeah, well... That's another idiotic thing Haas did on their website.
Nonetheless, you should not watch that video, and should never set your tools off the top of your part.
Haas is incredibly easy to set up from a setter or a block or gageline or spindle face or whatever the hell you want, but setting it off the top of the part is plain dumb, and that video should be burned along with the guy who made it.

Again, read up on Setting 64!

 

[Mike1974]

Does the same idiocy also apply on the mills in some form?

I posted in another thread, basically yes and no, but you would do this manual or auto correct. If it's raw stock you may want/need to take .1 off the face, or maybe just .020 to cleanup, same thing to mill and edge, no?? Anyways there is a value you can add into the tool touch of routine (depending) to adjust stock.

 

[Mike1974]

Shame on me and the school for not buying an option on a new piece of equipment? What kind of budget do you suppose a rural high school has for purchases like this? Is it really a bad thing if my students learn "extra math"? Do you have any idea of the struggle industry is having finding even remotely qualified help?
I appreciate most of the people on here who offer advice and help. If all you have is a comment like this, you can keep it. It does absolutely no good except puffing up your online ego.

"Puff up" my online ego, eh? Well think what you want. yes I do know, but what does that have to do with it? I did this for 30 years and I've seen alot. I don't care if the guy says he knows how to do something or not, he needs to show it, touchin tools, or making offsets, picking correct tools, within reason, I understand not everyone has been exposed to all the latest and greatest, but at*least* a basic understanding is a damn good start

 

[SeymourDumore]

I posted in another thread, basically yes and no, ...

Anyways there is a value you can add into the tool touch of routine (depending) to adjust stock.

Sounds like a Yes to me!
There is nothing about the "stock" here!
On my Fanuc or Mits control lathes, I can touch off to the setter, or I can touch off to the finish face ( true 0, not stock ) of the part
No matter which, the tool offset will be the same without me adding or subtracting anything from anywhere.

Not so on a Haas lathe...

 

[SeymourDumore]

I understand not everyone has been exposed to all the latest and greatest, but at*least* a basic understanding is a damn good start

To me basic understanding starts with manually picking up your tools where the what, why and how is not only explained, but also understood.

Showing students which buttons to push to get the machine do it's whizzbang magic proturbulations to arrive at the correct tool height and diameter while basic alright, it certainly isn't teaching!

In my view, a probe should only be available in an educational setting to let the students verify their own manual pickup results.